Demurrage & Detention Exposure
A corridor score tells you the weather. This tells you what it costs. Paste your box list to see live accrual, what the next seven days burn, and which containers to clear first — ranked by marginal cost of inaction, not sunk cost.
Container list
You supply the data · nothing is stored
Container no.
Carrier
Port
Charge type
Clock start
Free days
This calculator does not look up your containers. There is no carrier integration — the container number is a label only. All figures are computed from the dates, free time, and rates you enter, so they are exactly as accurate as those inputs.
Charges use escalating tiers (≈$110/day for days 1–5 past free time, $220/day for 6–10, $440/day thereafter) because flat-rate models badly understate tail exposure — which is where diverted cargo lands. Replace these with your own carrier tariff before relying on the numbers.
Charges use escalating tiers (≈$110/day for days 1–5 past free time, $220/day for 6–10, $440/day thereafter) because flat-rate models badly understate tail exposure — which is where diverted cargo lands. Replace these with your own carrier tariff before relying on the numbers.